RF1 GmbH is a Dierikon (canton Luzern) firm specialising in fire-protection planning and fire-protection inspections, covering feasibility studies, fire-protection concepts, quality-assurance documentation and site supervision (Fachbauleitung) across VKF quality-assurance levels 1–4. It draws on architectural, construction-management and building-services experience to develop object-specific solutions under the VKF/AEAI framework. Its outputs are an aid to professional judgement, not a substitute for it.